Furnace.



FURNACE.

(Application filed Mar. 6, 1900.1

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(No Model.)

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F U B N A C E.

(Application filed Mar. 6, 1900.)

2 Sheets-Sheet 2.

(No Model.)

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UNITED STATES PATENT @FFIcE.

ELZIVER o. RICKARD, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE KELSEY FURNACE COMPANY, OF SYRACUSE, NEW YORK.

FURNACE.

SPECIFICATION forming part of Letters .Patent No. 705,965, dated July 29, 1902.

Application filed March 6, 1900. Serial No. 7,463. (No model.)

To all whom it may concern:

Be it known that I, ELZIVER O. RICKARD, of Syracuse, in the county of Onondaga, in the State of New York, have invented certain new and useful Improvements in Furnaces, of which the following is a specification.

My invention relates to improvements in furnaces for heating air, and has for its object the production of a device for the desired purpose which is strong and durable in use, simple in construction, and highly elficient in operation; and to this end it consists in the combination, construction, and arrangement of the component parts of a furnace, as

hereinafter fully described, and pointed out in the claims.

In describing this invention reference is had to the accompanying drawings, forming part of this specification, in which like letters indicate corresponding parts in all the views.

Figure 1 is a vertical sectional View, partly broken away, of'myimproved furnace. Fig. 2 is an elevation, partly in section, of the parts illustrated in Fig. 1, the outer shell, the cold-air chamber, and the ash-box being removed. Fig. 3 is a horizontal sectional view taken on line 3 3, Fig. 2.

My improved furnace consists, essentially, of a combustion-chamber A, an ash-box B, a cold-air chamber 0, air-heating conduits and chambers D D D a water-heating chamber E, a chamber F for receiving the products of combustion, and an outer shell G. The combustion-chamber A is of any desirable form and size, being here illustrated as cylindrical and as inclosed by the air-heating conduits and chamber D D, the water-heating chamber E, and upper and lower separable plates a a and as communicating with a fuel-inlet passage a extending rearwardly from the front of the furnace. Said plates o-ct project outwardly beyond the combustion-chamber A, are provided with detachable central portions a a and with openings a extending vertically through their outer portions and alined with each other, and are united together by inner and outer series of bolts a a engaged, respectively, with the inner and outer portions of said plates and passed through the conduits D, presently described. The opposing faces of the plates a a are formed with substantially vertical projecting shoulders a a, and flanges a a, the flange a of the upper plate a being extended downwardly and formed of less diameter than said plate and the flange a of the lower plate a being extended upwardly and formed of greater height than the flange a and being provided with an outwardly-projecting peripheral shoulder a Said flange a is also provided with an opening a, extending horizontally through its front part beneath the shoulder a, and with outwardly-projecting tubular branches or extensions a arranged beneath said shoulder at, one or more of the branches or extensions o being provided with a suitable closure 0. and serving as clean out openings and another of the branches or extensions being connected to any desirable smoke-conduit H.

The ash-box B is arranged beneath the combustion-chamber A and extends forwardly beyond said chamber A, the top I) of the forwardly-extending part of the ash-box being depressed beneath the contiguous portion of the plate a, previously described. The coldair chamber C partly incloses the ash-box B and extends upwardly above the forwardlyprojecting part of said ash-box.

The-air-heating conduits and chamber D D extend vertically around the combustionchamber A. Said conduits D are arranged at opposite sides of the fuel-inlet passage a are of substantially uniform length, communicate at their opposite ends with adjacent openings a in the plates at a, previously described, and are provided at their ends with shoulders 01, engaged with the shoulders a a of the plates (1 CL. The conduits D form the upright inclosing wall for part of the com-. bustion-chamber A, and, as best'seen in Fig. 1, the lower portions of the contiguous sides of adjacent conduits D are substantially flat and in contact with each other, and the upper portions of said sides are corrugated and separated for forming corrugated heatingsurfaces within the conduits D and corrugated passages or flues d, leading from the combustion-chamber A between the conduits D to the chamber F, presently described.

The air-heating chamber D is formed with anopen top communicating with one of the openings a of the upper plate a. The airheating chamber D is arranged at the outside of the water-heating chamber E, presently described, beneath the fuel-inlet passage a and above the forwardly-projecting part of the ash-box B, and is formed with its bottom and front sides open for communieating, respectively, with one of the open ings a of the plate a and the opening a of the flange 01., said openings or a thus forming, essentially, upper and lower circulatingopenings for the chamber D The chamber E is detaohably arranged at the inner side of the chamber D beneath the fuel-inlet passage a and upon the lower plate a between the conduits D, arranged at opposite sides of said fuel-inlet passage, and forms the upright inclosing wall of the part of the combustion-chamber A not inclosed by the conduits and chamber D D. Said chamber E is usually provided with asupplemental water-heating chamber e, projecting from its inner face into the combustion-chamber, and is connected to water-circulating pipese e extendingthrough the air-heating chamber D one of said pipes being arranged above the flange a and the other being passed through the opening a in said flange.

The chamber F is inelosed by the upper and lower plates at a, previously described, a tubular shell f, and the outer walls of the conduits and chamber D D. Said shellfis suitably connected to the smoke-conduit H, surrounds the flange a, of the plate a and the upper portion of the flange a and its end edges are engaged with the upper plate a and the shoulder 0, of the lower plate a.

The outer shell G is of any desirable form, size, and construction and receives the air heated by my furnace.

In my pending application, Serial No. 4,164, filed February 6, 1900, I have disclosed and claimed a construction of furnace similar to that forming the subject-matter hereof, but unprovided with the heating-chamber E, the supplemental water-heating chamber e, and the water-circulating pipes 6 6 The construction and operation of my furnace .will now be readily understood upon reference to the foregoing description and the accompanying drawings, and it will be obvious that more or less change may be made in the detail construction and arrangement of its component parts without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, a tubular shell interposed between the upper and lower plates, upright air-heating conduits forming the upright wall of a part of the combustionchamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell and communicating heating chamber also forming the upright wall of a part of the combustion-chamber, said water-heating chamber being arranged within the tubular shell between two of the air-heating conduits, substantially as andfor the purpose described.

2. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, the lower plate being provided with an upwardly-extending flange, a tubular shell interposed between the upper plate and the upwardlyextending flange of the lower plate, upright air-heating conduits forming the upright wall of a part of the combustion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell at the inner side of the upwardly-extending flange of the lower plate and communicating with the openiugsin said plates, and a water heating chamber also forming the upright wall of a part of the combustion-chamber, said water-heating chamber being detachably mounted on thelower plate within the tubular shell at the inner side of said u pwardly-extending flange and between two of the air-heating conduits, substantially as and for the purpose specified.

3. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, the upper plate being provided with a downwardlyextending flange of less diameter thansaid plate, and the lower plate being provided with an upwardly-extending flange having a poripheral shoulder, a tubular shell surrounding the depending flange on the upper plate and the upper portion of the flange on the lower plate and interposed between the upper plate and the peripheral shoulder of the flange on the lower plate, upright air-heating conduits forming the upright wall of a part of the combustion-chamber, said conduits being arranged between the upper and lower plates within the tubular shell at the inner sides of said flanges of the upper and lower plates and communicating with the openings in said plates, and a waterheating chamber also forming the upright wall of a part of the combustion-chamber,said water-heatin g chamber being mounted on the lower plate within the tubular shell at the inner side of the upwardly-extending flange of said lower plate and between two of the air-heating conduits, substantially as set forth.

4. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, a tubular shell interposed between the upper and lower plates, upright air-heating conduits forming the upright wall of a part of the combus tion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell and G0lI1II1llnicating with the openings in said plates, a water-heating chamber also forming the up- I with the openings in said plates, and a water-'- I right wall of a part of the combustion-chamber, said water-heating chamber being arranged within the tubular shell between two of the air-heating conduits, and a supplemental water -heating chamber projecting from the inner face of the former waterheating chamberinto said combustion-chamber, substantially as and for the purpose set forth.

5. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, the lower plate being provided with an upwardly-extending flange, a tubular shell interposed between the upper plate and the upwardly-extending flange of the lower plate, upright airheating conduits forming the upright wall of a part of the combustion-chamber of the fur-- nace, said conduits being arranged between the upper and lower plates within the tubular shell at the inner side of the upwardlyextending flange of-the lower plate and communicating with the openingsin said plates, a water-heating chamber also forming the upright wall of a part of the combustionchamber, said water-heating chamber being detachably mounted on the lower plate within the tubular shell at the inner side of said upwardly-extending flange and between two of the air-heating conduits, and a supplemental water heating chamber projecting from the inner face of the former waterheating chamber into said combustion-chamber, substantially as and for the purpose described.

G. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, a tubular shell interposed between the upper and lower plates, upright air-heating conduits forming the upright wall of a part of the combustionchamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell and communicating 1 and lower separable plates having openings with the openings in said plates and having the lower portions of their contiguous sides formed substantially'flat and engaged with each other, and the upper portions of said sides corrugated and separated, and a waterheating chamber also forming the upright wall of a part of said combustion-chamber and arranged within the tubular shell be-' tween two of the air-heating conduits, sub stantially as and for the purpose specified.

7. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, the lower plate being provided with an upwardly-extending flange, a tubular shell interposed be tween the upper plate and the upwardly-ex tendingflange of the lower wall, upright air heating conduits forming the upright wall of a part of the combustion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tubu lar shell at the inner side of the upwardlyextending flange'of the lower plate and coin-- wardly-extending flange and between two of the air-heating conduits, and water-circulating pipes connected to the water-heating chamber, one of the pipes being arranged above said upwardly-extending flange, and

the other being passed through said flange, substantially as and for the purpose set forth.

8. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough, the lower plate being provided with an upwardly-extending flange, a tubular shell interposed between the upper plate and the upwardly-extending flange of the lower plate, upright airheating conduits forming the upright wall of a part of the combustion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tubu' lar shell at the inner side of the upwardly extending flange of the lower plate and communicating with the openings in said plates, a water=heating chamber also forming the upright wall of a part of said combustion-chamber, said water-heating chamber being de-' tachably mounted on the lower plate within the tubular shell at the inner side of said upwardly extending flange and between two of the air-heating conduits, a supplemental Water-heating chamber projecting from the inner face of the former water-heating cham-- ber into said combustion-chamber, and watercirculating pipes connected to the water heating chamber, one of the pipes being ar ranged above said upwardly-extending flange, and the other being passed through said flange, substantially as and for the purpose 1,, described.

9. In a furnace, the combination of upper extending vertically therethrough, a tubular shell interposed between the upper and lower plates, upright air-heating conduits forming the upright wall of a part of the combustionchamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell and communicating with the openings in said plates, a Waterheating chamber also forming the upright wall of a part of the combustion-chamber, said water-heating chamber being arranged within the tubular shell between two of the air-heating conduits, and an air heating chamber arranged within the tubular shell at the outer side of the water-heating chamber, substantially as and for the purpose specified;

10. In a furnace, the combination of upper' and lower separable plates having openings extending vertically therethrough, the lower plate being provided with an upwardly-exjtending flange, a tubular shell interposed be tween the upper plate and the upwardly-extending flange of the lower wall, upright airlieating conduits forming the upright wall of a part of the combustion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell at the inner side of the upwardlyextending flange of the lower plate and communicating with the openings in said plates, a water-heating chamber also forming the upright wall of a part of the combustion-chamber, said water-heating chamber being detachably mounted on the lower plate within the tubular shell at the inner side of said upwardlyextending flange and between two of the airheating conduits, and an air-heating chamber arranged within the tubular shell between said upwardly-extending flange and the water-heating chamber, substantially'as and for the purpose set forth.

11. In a furnace, the combination of upper and lower separable plates having openings extending Vertically therethrough, the lower plate being provided with an upwardly-extending flange, a tubular shell interposed between the upper plate and the upwardly-extending flange of the lower plate, upright airheating conduits forming the upright wall of a part of the combustion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell at the inner side of the upwardly-extending flange of the lower plate and communicating with the openings in said plates, a water-heating chamber also forming the upright wall of a part of the combustion-chamber, said water-heating chamber being detachably mounted on the lower plate within the tubular shell at the inner side of said upwardly-extending'flange and between two of the air-heatin g conduits,an air-heating chamber arranged within the tubular shell between said upwardly-extending flange and the water-heating chamber, a supplemental water-heating chamber projecting from the inner face of the former water-heatin g chamber into said combustion-chamber,and Watercirculating pipes passed through the air-heating chamber and connected to the water-heating chamber, one of the pipes being arranged above said upwardly-extending flange, and the other being passed through said flange, substantially as and for the purpose described 12. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough and alined with each other, the lower plate being provided with an upwardly extending flange formed with an opening extending horizontally therethrough, a tubular shell interposed between the upper plate and the upwardly extending flange of the lower plate, upright air-heating conduits forming the upright wall of a part of the combustion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tubular shell at the inner side of the upwardly-extending flange of the lower plate and communicating with the openings in said plates, a water-heating chamber also forming the upright wall of a part of the combustionchamber, said water-heating chamber being detachably mounted on the lower plate within the tubular shell at the inner side of said upwardly-extending flange and between two of the air-heating conduits, and an air-heat ing chamber arranged within the tubular shell between said upwardly-extending flange and the water-heating chamber and formed with upper and lower openings communicating with one of the openings extending vertically through the lower plate and with the opening extending horizontally through the upwardly extending flange of said lower plate, substantially as and for the purpose specified.

13. In a furnace, the combination of upper and lower separable plates having openings extending vertically therethrough and alined with each other, the lower plate being provided with an upwardly extending flange formed with an opening extending horizontally therethrough, a tubular shell interposed between the upper plate and the upwardlyextending flange of the lower plate, upright air-heating conduits forming the upright wall of a part of the combustion-chamber of the furnace, said conduits being arranged between the upper and lower plates within the tublar shell at the inner side of the upwardly-extending flange of the lower plate and communicating with the openings in said plates, a water-heating chamber also forming the upright wall of a part of the combustionchamber, said water-heating chamber being detachably mounted on the lower plate within the tubular shell at the inner side of said upwardly-extending flange and between two of the air-heating conduits, an air-heating chamber arranged within the tubular shell between said upwardly-extending flange and the water-heating chamber and formed with upper and lower openings communicating with one of the openings extending vertically through the lower plate and with the opening extending horizontally through the upwardly-extending flange of said lower plate, and watercirculating pipes passed through the air-heating chamber and connected to the water-heating chamber, one of the pipes being arranged above said upwardly-extending flange, and the other being passed through the opening extending horizontally through said flange, substantially as and for the purpose set forth.

In testimony whereof I have hereunto signed my name, in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 12th day of January, 1900.

ELZIVER O. RIOKARD.

Witnesses:

D. LAIME, S. DAVIS.

IIO 

